4.6 Article

Optical signal processing on a silicon chip at 640Gb/s using slow-light

Journal

OPTICS EXPRESS
Volume 18, Issue 8, Pages 7770-7781

Publisher

OPTICAL SOC AMER
DOI: 10.1364/OE.18.007770

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Funding

  1. Australian Research Council (ARC)

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We demonstrate optical performance monitoring of in-band optical signal to noise ratio (OSNR) and residual dispersion, at bit rates of 40Gb/s, 160Gb/s and 640Gb/s, using slow-light enhanced optical third harmonic generation (THG) in a compact (80 mu m) dispersion engineered 2D silicon photonic crystal waveguide. We show that there is no intrinsic degradation in the enhancement of the signal processing at 640Gb/s relative to that at 40Gb/s, and that this device should operate well above 1Tb/s. This work represents a record 16-fold increase in processing speed for a silicon device, and opens the door for slow light to play a key role in ultra-high bandwidth telecommunications systems. (C)2010 Optical Society of America

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